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MountainOne Bank, History
The following are major historical events for MountainOne Bank, including mergers and acquisitions.
| 1848-01-01 | Institution established but was not FDIC insured. Original name: North Adams Hoosac Savings Bank | |
| 1985-07-19 | Became FDIC insured. | |
| 1998-03-16 | Changed organization type to STOCK SAVINGS BANK | |
| 1998-03-16 | Reorganized. | |
| 1998-03-16 | Changed name to Hoosac Bank | |
| 2004-09-01 | Change trust powers from TRUST POWERS NOT GRANTED to LIMITED TRUST POWERS GRANTED | |
| 2011-11-30 | Reorganized. | |
| 2012-06-23 | Acquired Williamstown Savings Bank (23299) in WILLIAMSTOWN, MA | |
| 2013-07-20 | Changed name to MountainOne Bank | |
| 2013-07-20 | Acquired South Coastal Bank (23345) in ROCKLAND, MA |